D to A converter purchase....

No experience with Wadia but have heard the Gungnir Multibit. Note that the Gungnir Multibit is effectively an 18-bit DAC, so despite the ad copy about 'bit perfection' it won't decode those last few digits if you have hi-res files.

The Schiit house sound doesn't quite gel with my personal taste (in the case of the Gungnir, I feel it smoothes over too much low-level detail) but it may prove to be a worthy match in your system.

Note that the Gungnir Multibit is effectively an 18-bit DAC

Not according to Schiit

.........coupled to four precision Analog Devices AD5781BRUZ digital to analog converters for true hardware balancing and 19 effective bits of resolution.

The DAC chip is 18 bit, however, Schiit uses two per channel.

2^18 = 262144
2* (2^18) = 2* 262144
524288 = 524288
2^19 = 524288

Yes, I realize the gain in signal-to-noise ratio when you combine the converter chips that way, but it's still an 18-bit part and will only decode 18 bits worth of data.

Yes, I realize the gain in signal-to-noise ratio when you combine the converter chips that way, but it's still an 18-bit part and will only decode 18 bits worth of data.

This thread discussion is beginning to read a lot like this one :)

https://forum.audiogon.com/discussions/schiit-yggdrasil-21-bit/post?highlight=2097152&postid=148...

"Read this from MoJo Music:
'When a Redbook PCM file is played on a native DSD delta sigma single-bit converter, the single-bit DAC chip has to convert the PCM to DSD in real-time. This is one of the major reasons people claim DSD sounds better than PCM, when in fact, it is just that the chip in most modern single-bit delta sigma DACs do a poor job of decoding PCM.'"

I have seen this quote touted before and I really have no dog in this fight, but Mojo is hardly an objective observer as it sells a $7600 DAC based upon AD1862 R-2R ladder DAC chips.  I'm sure it sounds fine, but it is not the only way to build a fine DAC.  There are also several outstanding DACS built around the newest delta sigma chips. 

It has become commonplace to bad mouth DS chips these days, possibly because older generations of them were not top performers.  Also, they are easier to implement and therefore  ubiquitous.  So they are built into DACs with a greater variety of SQ.